NATO Stock Number
5320-00-256-1963
Sold in multiples of
DEMIL
NO
Fastener Length
Between 0.115 inches and 0.135 inches
Head Style
Flush (flat) countersunk (included angle - less than 135 degrees w or w/o chamfer)
Shank Diameter
Between 0.093 inches and 0.097 inches
Shank Style
Straight w/radius chamfered tip
Head Major Diameter
Between 0.175 inches and 0.183 inches
End Application
B-1b aircraft
Shear Strength
41000 single pounds per square inch
Countersink Angle
Between 99.5 degrees and 100.5 degrees
Heat Treatment
T-73 solution heat treated
Material
Aluminum alloy 7050
Material Specification
Qq-a-430 federal specification single material response
Surface Treatment
Anodize or chromate
Surface Treatment Specification
Mil-a-8625 military specification 1st treatment response or mil-c-5541 military specification 2nd treatment response